This Vienna bridge multi-band oscillator circuit was found in a 1974 Ferranti transistor manual. The circuit generates signals from 25 Hz to 1 MHz in 5 bands selected by the capacitors.
Found in ancient documentation, this circuit uses a high voltage transistor of the time. Observe...
This circuit is from the National Semiconductor Audio Handbook. The amplifier operates with 6 V...
This circuit was found in documentation from the 90s. The components used are not common today. The...